Improvement in car-ventilators



A. HANCE. Car-Ventilatbr.

N0. 168,897. Patented0ct.l9,l875.

IIIII/filllIfl/IIIII I/IIIIIIII lllllll 1 l/I WITNESSES: INVENTDB ATTORNEYS.

NKPETERS, PHOTQLITMOGRAPHER, WASHINGTON, D C.

ARGHIBALD HANOE,

OF NEW YORK, N. Y.

IMPROVEMENT IN CAR-VENTILATORS.

Specification forming part of Letters Patent No. 168,897, dated October 19, 1875; application filed January 25, 1875.

' To all whom it may concern:

Be it known that I, ARCHIBALD HANOE, of the city, county, and State of New York, have invented a new and useful Improvement in Car Ventilators, of which the following is a specification The invention consists in aseries of pivoted ventilators or valves connected at one side or edge by means of a strap or bar, so that they may be operated simultaneously by means of a curved pivoted rack-bar. Another (and the main) function of the valve-connecting bar is to act as a stop for the valves when opened, or

. being opened, as hereinafter described.

In the accompanying drawing, Figure 1 represents a cross-section of the roof of a streetcar, showing the construction of the ventilatorvalves and mode of operating them. Fig. 2 is a side view of the roof, giving an outside view of the "entilating-valves on one side of the car.

Similar letters of reference indicate corresponding parts.

A is the oar-roof. B is the offset from the roof, in which ofl'set the ventilators are placed. 0 represents the ventilators or valves, which are placed so as to be nearly vertical when closed; but they may be in an inclined posi-- tion. These ventilating valves are attached to their several openings by pivots in the center of their ends, which enter the timbers D, by

which the valves are separated. E is a strip or bar of metal or other material, which is attached by nails or screws to the lower portions of the outsides of the valves. This strip or bar of metal forms a stop against the timbers D when the valves are closed, and, connecting, as it does, all the valves together, it

allows them all to be operated at the same Witnesses:

T. B. MOSHER, ALEX. F. ROBERTS.

PAT nrprrIcE. 

